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Sanity-check script sizes in bitcoin-tx

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This commit is contained in:
Matt Corallo
2017-10-24 14:11:21 -04:00
parent 57ee73990f
commit a6f33ea77d
1 changed files with 13 additions and 0 deletions
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13
src/bitcoin-tx.cpp
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@@ -387,6 +387,10 @@ static void MutateTxAddOutMultiSig(CMutableTransaction& tx, const std::string& s
scriptPubKey = GetScriptForWitness(scriptPubKey); scriptPubKey = GetScriptForWitness(scriptPubKey);
} }
if (bScriptHash) { if (bScriptHash) {
if (scriptPubKey.size() > MAX_SCRIPT_ELEMENT_SIZE) {
throw std::runtime_error(strprintf(
"redeemScript exceeds size limit: %d > %d", scriptPubKey.size(), MAX_SCRIPT_ELEMENT_SIZE));
}
// Get the ID for the script, and then construct a P2SH destination for it. // Get the ID for the script, and then construct a P2SH destination for it.
scriptPubKey = GetScriptForDestination(CScriptID(scriptPubKey)); scriptPubKey = GetScriptForDestination(CScriptID(scriptPubKey));
} }
@@ -447,10 +451,19 @@ static void MutateTxAddOutScript(CMutableTransaction& tx, const std::string& str
bScriptHash = (flags.find("S") != std::string::npos); bScriptHash = (flags.find("S") != std::string::npos);
} }
if (scriptPubKey.size() > MAX_SCRIPT_SIZE) {
throw std::runtime_error(strprintf(
"script exceeds size limit: %d > %d", scriptPubKey.size(), MAX_SCRIPT_SIZE));
}
if (bSegWit) { if (bSegWit) {
scriptPubKey = GetScriptForWitness(scriptPubKey); scriptPubKey = GetScriptForWitness(scriptPubKey);
} }
if (bScriptHash) { if (bScriptHash) {
if (scriptPubKey.size() > MAX_SCRIPT_ELEMENT_SIZE) {
throw std::runtime_error(strprintf(
"redeemScript exceeds size limit: %d > %d", scriptPubKey.size(), MAX_SCRIPT_ELEMENT_SIZE));
}
scriptPubKey = GetScriptForDestination(CScriptID(scriptPubKey)); scriptPubKey = GetScriptForDestination(CScriptID(scriptPubKey));
} }